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/*
* keyboard_app.c
*
* Created on: Mar 24, 2013
* Author: hathach
*/
/*
* Software License Agreement (BSD License)
* Copyright (c) 2012, hathach (tinyusb.org)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*
* This file is part of the tiny usb stack.
*/
//--------------------------------------------------------------------+
// INCLUDE
//--------------------------------------------------------------------+
#include "keyboard_app.h"
#if TUSB_CFG_HOST_HID_KEYBOARD
//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
#define QUEUE_KEYBOARD_REPORT_DEPTH 5
//--------------------------------------------------------------------+
// INTERNAL OBJECT & FUNCTION DECLARATION
//--------------------------------------------------------------------+
OSAL_TASK_DEF(keyboard_task_def, "keyboard app", keyboard_app_task, 128, KEYBOARD_APP_TASK_PRIO);
OSAL_QUEUE_DEF(queue_kbd_report, QUEUE_KEYBOARD_REPORT_DEPTH, tusb_keyboard_report_t);
static osal_queue_handle_t q_kbd_report_hdl;
static tusb_keyboard_report_t usb_keyboard_report TUSB_CFG_ATTR_USBRAM;
// only convert a-z (case insensitive) + 0-9
static inline uint8_t keycode_to_ascii(uint8_t modifier, uint8_t keycode) ATTR_CONST ATTR_ALWAYS_INLINE;
//--------------------------------------------------------------------+
// tinyusb callback (ISR context)
//--------------------------------------------------------------------+
void tusbh_hid_keyboard_isr(uint8_t dev_addr, uint8_t instance_num, tusb_event_t event)
{
switch(event)
{
case TUSB_EVENT_INTERFACE_OPEN: // application set-up
osal_queue_flush(q_kbd_report_hdl);
tusbh_hid_keyboard_get_report(dev_addr, instance_num, (uint8_t*) &usb_keyboard_report); // first report
break;
case TUSB_EVENT_INTERFACE_CLOSE: // application tear-down
break;
case TUSB_EVENT_XFER_COMPLETE:
osal_queue_send(q_kbd_report_hdl, &usb_keyboard_report);
tusbh_hid_keyboard_get_report(dev_addr, instance_num, (uint8_t*) &usb_keyboard_report);
break;
case TUSB_EVENT_XFER_ERROR:
tusbh_hid_keyboard_get_report(dev_addr, instance_num, (uint8_t*) &usb_keyboard_report); // ignore & continue
break;
default :
break;
}
}
//--------------------------------------------------------------------+
// APPLICATION
//--------------------------------------------------------------------+
void keyboard_app_init(void)
{
memclr_(&usb_keyboard_report, sizeof(tusb_keyboard_report_t));
ASSERT( TUSB_ERROR_NONE == osal_task_create(&keyboard_task_def), (void) 0 );
q_kbd_report_hdl = osal_queue_create(&queue_kbd_report);
ASSERT_PTR( q_kbd_report_hdl, (void) 0 );
}
//------------- main task -------------//
OSAL_TASK_FUNCTION( keyboard_app_task ) (void* p_task_para)
{
tusb_error_t error;
static tusb_keyboard_report_t prev_kbd_report = { 0 }; // previous report to check key released
tusb_keyboard_report_t kbd_report;
OSAL_TASK_LOOP_BEGIN
osal_queue_receive(q_kbd_report_hdl, &kbd_report, OSAL_TIMEOUT_WAIT_FOREVER, &error);
//------------- example code ignore modifier key -------------//
for(uint8_t i=0; i<6; i++)
{
if ( kbd_report.keycode[i] != prev_kbd_report.keycode[i] )
{
if ( 0 != kbd_report.keycode[i]) // key pressed
{
printf("%c", keycode_to_ascii(kbd_report.modifier, kbd_report.keycode[i]) );
}else
{
// key released
}
}
prev_kbd_report.keycode[i] = kbd_report.keycode[i];
}
OSAL_TASK_LOOP_END
}
//--------------------------------------------------------------------+
// HELPER
//--------------------------------------------------------------------+
static inline uint8_t keycode_to_ascii(uint8_t modifier, uint8_t keycode)
{
// TODO max of keycode_ascii_tbl
return keycode > 128 ? 0 :
hid_keycode_to_ascii_tbl [modifier & (KEYBOARD_MODIFIER_LEFTSHIFT | KEYBOARD_MODIFIER_RIGHTSHIFT) ? 1 : 0] [keycode];
}
#endif
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